<body ng-init="name='Jaggu ji'">
<div id="contentbody">

	<div ng-hide="isHidden">
		Name:<input type="text" ng-model="name" /> 
		<br/>{{name}}
		<br/><span ng-bind="name"/>
	</div>
	Hide:
	<input type="checkbox" ng-model="isHidden"/>
	<br />
	<button ng-click="name='Shambhu'">Change Name</button>
</div>
</body>